Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover read-only, idempotent, and non-destructive behavior. The description adds useful output details—text summary, opening URL, metadata—without contradicting annotations. It does not discuss errors or rate limits, but for a simple read operation with strong annotation coverage this is sufficient.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.